Carbureter attachment.



L. B. HARROD.

CARBURETER ATIACHMENT. APPLICATION FILED MAR. 28, 1917.

WITNESSES INVENTOR W 4am j/iaz'rod ATTORNEYS LINN B. HABROD, OF LITTLE ROCK, ARKANSAS.,

cannnnnrnn ATTACHMENT.

' Specification of Letters Patent.

Patented Dec. 18, 1917- Application filed March 28, 1917. Serial No. 157,916.

To all whom it may concern:

Be it known that I, LINN B. HARRon, a citizen of the United States, and a resident of Little Rock, in the county of Pulaski and State of Arkansas, have made certain new and useful Improvements in Qarbureter Attachments, of which the following is a specification.

My invention relates to i provements in attachments for carbureter; in the combinations, const.:uctions and arrangements herein described and claimed.

My invention relates more particularly to means for heating t e air coming through the air intake of a ca 'bureter thereby facilitating the starting of theengine with which the carbureter is associated.

A further object of my inventionv is to' provide an attachment to the carburetor which is simple in construction but by means of which the incoming air .may be heated through electrical means, at the will of the operator. 1

Other objects and in the following specification, and the novel features of the invention will be particularly pointed out in the appended clalm.

My invention is illustrated in, the accompanying drawings which form part of this applicatiomand in which:

Figure 1 is a side View of the device as applied to a carbureter.

Fig. 2 is a central section through the device, and Y F Fig. 3 is a section along the line 33 of In carrying out my invention, I provide an insulating cylinder 1 which may be fiber ,or other suitable insulating material, this cylinder being secured to the end of the air intake pipe 2 by screws 3 or in any other suitable manner. At the end of the cylinder 1 is a cap 4 which is providedwith wire mesh 5 so as to strain the air entering the 1pc. P On the inside of the tube lis an asbestos lining 6. This is in the shape .of a tube which is in engagement with the tube 1. In-

and it consists advantages will appear stead of making the tube 6 of asbestos, porcelain or other suitable material might be used.

'011 the inside of the tube 6 is a resistance element 7 which in the present instance is shown as consisting of two or three spirals of wire such as German silver wire or other suitable resistance element. The ends of the resistance element 7 are brought out to the binding posts 8 to which wires 9 are attached. The wires 9 may be connected with any suitable source of current.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. When it is desired to heat the air entering theail', intake, current is sent through wires 9, thusheating the resistance element which in turn imparts its heat to the air.

The mixture of heated air and gasolene is more easily ignited than a cold mixture, and the engine will start manytimes with the use of this attachment, as for instance in cold weather, when it would not start under ordinary conditions.

I claim:

A carbureter attachment comprising an insulating tube having one end arranged to slip over the'air intake tube of the carbureter, meansfor securing said insulating tube to said air intake tube, a heat resisting tube disposed within said first-named tube, an electrical. resistance element disposed within said heat resisting tube, said element comprising a series of spiral coils,

element. LINN B. HARROD'. Witnesses:

Tnos. A. JAcKsoN, WILL G. HOUSE. 

